Default cap on a single un-dispatched SSE event before the parser fails
closed. Measured in UTF-16 code units (an approximate byte bound — JS string
length, which tracks heap cost). Generous enough for a full feed page (the
JSON feed endpoint caps responses at ~2 MiB) while bounding memory against a
hostile or buggy stream that never emits a blank line.
Default cap on a single un-dispatched SSE event before the parser fails closed. Measured in UTF-16 code units (an approximate byte bound — JS string length, which tracks heap cost). Generous enough for a full feed page (the JSON feed endpoint caps responses at ~2 MiB) while bounding memory against a hostile or buggy stream that never emits a blank line.